期刊
ASTROPARTICLE PHYSICS
卷 34, 期 6, 页码 420-430出版社
ELSEVIER
DOI: 10.1016/j.astropartphys.2010.10.007
关键词
Neutrinos; Cascades
资金
- US National Science Foundation-Office of Polar Program
- US National Science Foundation-Physics Division
- University of Wisconsin Alumni Research Foundation
- US Department of Energy
- National Energy Research Scientific Computing Center
- Louisiana Optical Network Initiative (LONI)
- Swedish Research Council
- Swedish Polar Research Secretariat
- Knut and Alice Wallenberg Foundation, Sweden
- German Ministry for Education and Research (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Research Department of Plasmas with Complex Interactions (Bochum), Germany
- FNRS-FWO
- FWO Odysseus programme
- Flanders Institute to encourage scientific and technological research in industry (IWT)
- Belgian Federal Science Policy Office (Belspo)
- Marsden Fund, New Zealand
- SNF (Switzerland)
- EU
- Capes Foundation
- Ministry of Education of Brazil
- STFC [ST/J000507/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000507/1] Funding Source: researchfish
We report on the search for electromagnetic and hadronic showers (cascades) produced by a diffuse flux of extraterrestrial neutrinos in the AMANDA neutrino telescope. Data for this analysis were recorded during 1001 days of detector livetime in the years 2000-2004. The observed event rates are consistent with the background expectation from atmospheric neutrinos and muons. An upper limit is derived for the diffuse flux of neutrinos of all flavors assuming a flavor ratio of v(e):v(mu):v(tau) = 1:1:1 at the detection site. The all-flavor flux of neutrinos with an energy spectrum Phi proportional to E-2 is less than 5.0 x 10(-7) GeV s(-1) sr(-1) cm(-2) at a 90% C.L. Here, 90% of the simulated signal would fall within the energy range 40 TeV to 9 PeV. We discuss flux limits in the context of several specific models of extraterrestrial and prompt atmospheric neutrino production. (C) 2010 Published by Elsevier B.V.
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